Electrically conductive hybrid membrane, making method thereof, secondary battery and electronic device comprising the same

Patent metadata

Field	Value
Publication number	US-12021260-B2
Application number	US-202217986462-A
Country	US
Kind code	B2
Filing date	Nov 14, 2022
Priority date	Jan 21, 2019
Publication date	Jun 25, 2024
Grant date	Jun 25, 2024

Abstract

An electrically conductive hybrid membrane, including a solid membrane substrate including a curable material; and electrically conductive particle disposed on the solid membrane substrate, wherein the solid membrane substrate has an elastic modulus of about 10 MPa to about 1000 MPa, and the electrically conductive particle is exposed on both sides of the solid membrane substrate.

First claim

What is claimed is:

1. A hybrid membrane, comprising:
a solid membrane substrate comprising a cured product of an adhesive material; and
a conductive particle comprising an ion conductive particle, an electron conductive particle, or a combination thereof, the conductive particle being exposed from both opposing surfaces of the solid membrane substrate,
wherein a thickness t of the solid membrane substrate and a diameter D of the conductive particle satisfy the relationship of Equation 1:
t≤ 0.4× D , and  Equation 1

wherein a peel strength of a membrane substrate-forming layer during disposing of the conductive particles is 0.05 Newton per 25 millimeters to 100 Newtons per 25 millimeters, wherein the solid membrane substrate is derived from the membrane substrate-forming layer.

2. The hybrid membrane of claim 1 , wherein the solid membrane substrate is an insulating substrate.

3. The hybrid membrane of claim 1 , wherein a resistivity of the solid membrane substrate is 10 ohm-meters to 10 25 ohm-meters.

4. The hybrid membrane of claim 1 , wherein an elastic modulus of the solid membrane substrate is 10 megaPascals to 1000 megaPascals at room temperature.

5. The hybrid membrane of claim 1 , wherein the adhesive material comprises a thermosetting adhesive material, an ultraviolet (UV) curable adhesive material, a moisture curable adhesive material, or a combination thereof.

6. The hybrid membrane of claim 1 , wherein the adhesive material comprises an acryl adhesive, an epoxy adhesive, a urethane adhesive, a phenol adhesive, or a combination thereof.

7. The hybrid membrane of claim 1 , wherein a tackiness of the adhesive material is 1 Newton per square centimeter to 20 Newtons per square centimeter.

8. The hybrid membrane of claim 1 , wherein the conductive particles are arranged in hexagonal shape.

9. The hybrid membrane of claim 1 , wherein the ion conductive particle conducts at least one ion of a lithium ion, a sodium ion, a proton, an iron ion, a zinc ion, a magnesium ion, and a potassium ion.

10. The hybrid membrane of claim 1 , wherein an ion conductivity of the ion conductive particle is 1×10 −5 Siemens per centimeter to 1×10 −3 Siemens per centimeter.

11. The hybrid membrane of claim 1 , wherein the electron conductive particle comprises an elastomer and a metal layer disposed on the surface of the elastomer.

12. The hybrid membrane of claim 11 , wherein the elastomer comprises a polystyrene compound, an epoxy compound, a polyimide compound, a phenol compound, or a combination thereof, and
the metal layer comprises gold (Au), silver (Ag), nickel (Ni), palladium (Pd), copper (Cu), or a combination thereof.

13. The hybrid membrane of claim 1 , wherein the thickness t of the solid membrane substrate and the diameter D of the conductive particle satisfy the relationship: 0.24×D≤t≤0.30×D.

14. An electronic device comprising the hybrid membrane of claim 1 .

15. A secondary battery comprising
a positive electrode;
a negative electrode; and
a hybrid membrane disposed between the positive electrode and the negative electrode,
wherein the hybrid membrane comprises
a solid membrane substrate comprising a cured product of an adhesive material; and
an ionic conductive particle, the ionic conductive particle being exposed from both opposing surfaces of the solid membrane substrate, and
wherein a thickness t of the solid membrane substrate and a diameter D of the ionic conductive particle satisfy the relationship of Equation 1:
t≤ 0.4× D,   Equation 1

wherein a peel strength of a membrane substrate-forming layer during disposing of the conductive particles is 0.05 Newton per 25 millimeters to 100 Newtons per 25 millimeters, wherein the solid membrane substrate is derived from the membrane substrate-forming layer.

16. The secondary battery of claim 15 , wherein an elastic modulus of the solid membrane substrate is 10 megaPascals to 1000 megaPascals at room temperature.

17. An anisotropic conductive film comprising
a solid membrane substrate comprising a cured product of an adhesive material; and
an electron conductive particle, the electron conductive particle being exposed from both opposing surfaces of the solid membrane substrate,
wherein a thickness t of the solid membrane substrate and a diameter D of the electron conductive particle satisfy the relationship of Equation 1:
t≤ 0.4× D , and  Equation 1

wherein a peel strength of a membrane substrate-forming layer during disposing of the conductive particles is 0.05 Newton per 25 millimeters to 100 Newtons per 25 millimeters, wherein the solid membrane substrate is derived from the membrane substrate-forming layer.

18. An electronic device comprising the anisotropic conductive film of claim 17 .

19. The anisotropic conductive film of claim 17 , wherein an elastic modulus of the solid membrane substrate is 10 megaPascals to 1000 megaPascals at room temperature.

Assignees

• Samsung Electronics Co Ltd

Inventors

• Hamamoto Nobuo
• Kitajima Shintaro

Classifications

• H10W72/354

  comprising polymers · CPC title

• H10W72/353

  not comprising solid metals or solid metalloids, e.g. ceramics · CPC title

• H10W72/325

  Die-attach connectors having a filler embedded in a matrix · CPC title

• H10W72/01351

  Changing the shapes of die-attach connectors · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title